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Toxic chemical leak at a manufacturing facility in Orange County

bbc.com

151–160 of 177 posts

Re: Toxic chemical leak at a manufacturing facility in Orange County

#151

I love how the current title of this post just assumes that everyone lives in California. There are other "Orange County"s in the U.S.

I live in a different Orange County, and this does not bother me in the least. Context matters! Headlines aren't supposed to have every detail in them.

Re: Toxic chemical leak at a manufacturing facility in Orange County

#152

Earlier quoted context omitted.

What about airlifting a containment vessel on top of it? To lessen the impact of an explosion?

I refer you to this excellent literature review of the topic: https://www.youtube.com/shorts/M9AXXLAonh8

What if built a containment dome and then filled it with cold water?

Re: Toxic chemical leak at a manufacturing facility in Orange County

#153
post #39

Earlier quoted context omitted.

They are having valve problems. One of the possible reasons is that it may be turning into a solid plastic. If so, that could be one of the best outcomes. As long as it does not blow up before the process completes.

Turning into plastic is an exothermic reaction. That's what's heating the tank.

It is also a slower exothermic reaction. Which makes it possibly manageable.

Re: Toxic chemical leak at a manufacturing facility in Orange County

#154
post #47
post #39

Earlier quoted context omitted.

They are having valve problems. One of the possible reasons is that it may be turning into a solid plastic. If so, that could be one of the best outcomes. As long as it does not blow up before the process completes.

Provided the plastic doesn't need significantly more space than the source material, of course. We all know what happens when you try freezing a sealed bottle filled with water.

Solids generally take less volume than liquids. Water is very unusual in this regard

Re: Toxic chemical leak at a manufacturing facility in Orange County

#155

Earlier quoted context omitted.

What about airlifting a containment vessel on top of it? To lessen the impact of an explosion?

I refer you to this excellent literature review of the topic: https://www.youtube.com/shorts/M9AXXLAonh8

The escalation from a cute firecracker, that's a bit dangerous, to holy hell, that's not a firework, that's a hand grenade is sublime.

Re: Toxic chemical leak at a manufacturing facility in Orange County

#156

Earlier quoted context omitted.

I refer you to this excellent literature review of the topic: https://www.youtube.com/shorts/M9AXXLAonh8

What if built a containment dome and then filled it with cold water?

water is incompressible. Blast overpressure is way more damaging in it

Re: Toxic chemical leak at a manufacturing facility in Orange County

#157

Earlier quoted context omitted.

I refer you to this excellent literature review of the topic: https://www.youtube.com/shorts/M9AXXLAonh8

The escalation from a cute firecracker, that's a bit dangerous, to holy hell, that's not a firework, that's a hand grenade is sublime.

Yes, and hard to stop watching. Really want to find out what happens to that steadfast pot.

Re: Toxic chemical leak at a manufacturing facility in Orange County

#158

Earlier quoted context omitted.

The standard choice for MMA processing is actually stainless steel, because carbon steel/iron/etc scavenge the inhibitor used to prevent thermal runaway. HDPE would work, and often how it is transported in drums, but for actual processing, everything would normally be spec'd as stainless steel. Which, of course, is pretty spark resistant to begin with. Even if this wasn't true, this is not a hard problem, you can use…

Inb4: I don't work in the industry, my knowledge is limited to a faint memory of a college course on fluid dynamics. If I recall correctly, high pressure ignitable stuff can spontaneously turn !!FUN!! in absence of heat if it is suddenly relieved through a pinhole. Basically jet is followed by a ring-like zone where the stuff mixes with oxygen. Jet creates tiny zones of very high temp, thus igniting the mixture ring…

This is true in other cases but in this case they are actually hoping it leaks

Re: Toxic chemical leak at a manufacturing facility in Orange County

#159

I'd be curious how it came to pass that 40k people were living within the blast radius of a plant processing toxic chemicals. Isn't this sort of thing the primary justification for the existence of zoning laws?

Watch this https://www.imdb.com/title/tt0090586/

Re: Toxic chemical leak at a manufacturing facility in Orange County

#160
post #132

Earlier quoted context omitted.

The difference in cooling potential between cold water and water at ambient temperature is minimal. Cooling with water primarily comes from phase change or heat exchange; both can move vastly more heat than a small difference in temperature. Chilling the water would massively complicate the logistics with a very marginal improvement in heat removal.

Heat exchange is proportional to the difference in temperature though (in reference to your "or heat exchange"). Colder water would cool faster. The tank isn't at boiling either, so it's not like you'll be able to phase change away a bunch of energy. I guess you'll still get some evaporative cooling, but there's a limit to how much you'll get just from the ambient temperature (the exterior of the tank is relatively c…

The increase in heat removal rate for a 20K temperature difference is quite small unless the source and sink have a similar temperature. This emergency exists because they are not even close to being similar temperatures. Evaporative (phase change) cooling does most of the heavy lifting and is very efficient.

It is the same reason sweating cools the body much more effectively in low humidity than high humidity environments regardless of the temperature when you drink it. Attributing how drinking water cools the body via various effects is a classic introductory thermodynamics exercise.

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